Answer
The carboxylic acid group can donate a proton to the amino group to form H$_{3}$N$^{+}$CH$_{2}$COO$^{-}$.
Work Step by Step
The carboxylic acid group can donate a proton to the amino group to form H$_{3}$N$^{+}$CH$_{2}$COO$^{-}$.
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